Electrode-terminal



H. M. KORETZKY.

ELECTRODE TERMINAL.

APPLICATION FILED JUNE 30, 1920.

' INVENTOR H4168 Y M KOEETZKY WIT/VE E8 %q WWW HARRY M. KORETZKY, OF NEW YORK, N. Y.

ELECTRODE-TERMINAL.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed June 30, 1920. Serial No. 392,928. 7

To all whom it may concern:

Be it known that I, HARRY M. KoRETzKr,

a citizen of the United States, and resident of the city of New York borough of Manhat-.

tan, in the county and State of New York, have invented a new and Improved Electrode-Terminal, of which the following is a full, clear, and exact description.

It is a well appreciated fact that terminals associated with batteries, and more particularly dry batteries, fail to provide a suiticiently tight contact insuring perfect results.

This defect is to be attributed to the fact that the electrodes, and more particularly the central electrode does not intimately engage the carbon, providing one of the ac-' tive elements. This latter terminal, as is well appreciated, usually includes a cap formed with a centrally disposed outwardly extending screw threaded shank, adapted to receive a knurled nut, the latter portions providing means for securing the end of a lead Wire, the cap embracing the upper end of the carbon and relying for a great part uponfrictional engagement of the same to retain it in applied position.

Due to the varying dimensions of carbons,

- and the different ratios of expansion between the same and the metallic cap, a cer' tain amount of play may come into existence subsequent to the application of these elements one with relation to the other, even although a perfect engagement may have existed at the time of the initial application.

Having these defects in mind, I have now constructed terminals, more particularly adapted for use in connection with dry batteries, my invention being especially directed to providing a terminal to be associated with a central electrode; such terminal insuring at all times an intimate contact between the active element and its body, whereby a full production of current will be insured.

Reference is bad to the attached sheet of drawings as illustrating one practical em bodiment of my invention, and in which drawings,

Figure 1 is a partly sectional side view of a battery constructed in accordance with my invention, and showing my improved types of terminals applied thereto.

Fig. 2 is a plan view thereof, and

Figs. 3 and 4 are elevational views of the terminals adapted to be associated with each of the active elements of the battery. In these views the reference numeral 5 indicates the usual shell of insulating material serving to house the conventional cup 6, which latter receives the usual compounds 7, and the central carbon electrode 8.

In the customary manner, the upper end i of the cup 6 is closed by layers of insulating material 9 and it is to be noted that the upper edge of the cup adjacent the layers of insulating material is provided with an inwardly bent portion 10 for a purpose hereinafter more fully specified.

Contrary to the usual procedure of applying a cap to provide a terminal, the upper face of the carbon 8 is drilled so as to form an opening, a second opening being formed, which latter opening extends from the side face of the carbon through to the central opening.

A screw threaded socket member 11 is placed within the first opening and anchored therein by any suitable medium such as a lead plug 12 introduced into the second opening while in a fluid condition, the inner end of the plug 12 engaging a groove 13 formed in the outer face of the socket member 11; it being obvious that by virtue of this construction that an removal of the socket member 11 is precluc ed.

With a view now of suitably associating a secondary terminal withthe second active element, a screw threaded socket member 14 formed with a notch 15 in its lower face is provided, the bent portion of the cup 6 being adapted to project into such notch whereby to insure a desirable contact. Associated with each of the socket members 11 and 14 are set screws 16 of any desirable construction, which 'are provided in the usual manner with screw threaded shanks 17, adapted to project into the sockets of these members, whereby to provide a clamping action to permit of the proper securing of lead wires to these terminals.

From the above construction, it will be obvious that I have provided a terminal more particularly adapted for use in connection with dry batteries, and by means of which, referring more particularly to the central active member, it will be impossible for a removal of the terminal to be effected from the electrode without breaking the terminal including a screw threaded socket;

member, and a set screw adapted to project into the opening of said socket member, said socket member being positioned within the opening formed in the terminal, and having its side and base face in intimate contact with the side and base portions of the electrode opening.

2. An electrode terminal, including in combination with one of the electrodes of a battery, and an opening formed therein, of a terminal including a socket member adapted to be positioned within said opening, and means cooperating with said socket member for permitting of a wire being secured thereto.

3. An electrode terminal, including in combination. with one of the electrodes of a battery, and an opening formed therein, of a terminal comprising a body portion adapted to be positioned within said opening, said body portion being formed with a groove in its outer face, and an anchoring element associated with said electrode and retract adapted to engage said groove whereby to prevent movement of said terminal.

4. An electrode terminal, including in combination with one of the electrodes of a battery, and an opening formed therein, of a terminal comprising a body portion adapted to be positioned within said opening, said body portion being formed with a groove in its outer face, and an anchoring element extending within an opening formed in said electrode, said opening intersecting the first named opening, the inner end of said anchoring element engaging said grooves.

5. An electrode terminal, including in combination with one of the electrodes of a battery, and an opening formed therein, of a terminal comprising a screw threaded socket member adapted to be positioned within said opening, and a set screw projecting into and cooperating with said socket member.

6. An electrode terminal, including in combination with one of the electrodes of a battery, of a socket member formed with aslot in its lower face, said electrode presenting a relatively narrow body portion adapted to project into said slot, and means adapted to cooperate with said socket memher to permit of the attachment of a Wire thereto.

HARRY M. KORETZKY. 

